An image processing technique called ASIR allows radiologists to reduce radiation levels in chest CT exams without sacrificing image quality or diagnostic confidence, according to a paper just published by Mass General researchers.

Dushyant Sahani, MD, Director of CT at Massachusetts General Hospital Imaging, answers parents’ questions on the June 2012 study in The Lancet that found that children who get several CT scans have a slightly higher chance of brain cancer and leukemia in later life.